Articles by Henry Johnstone P.E.

Thermal ice storage is the latest addition to an energy-wise response to heating and cooling demands for 176 buildings on the University of Arizona’s 355-acre campus. With a mix of chiller types and fuel sources, the school’s effort to integrate its energy system and further diversify with TES has already paid off not only in day-to-day operations, but it also helped avoid a service meltdown in the midst of an outage caused by an off-campus accident.